Less renderer needs to be run in the path of the less files. Also the

renderer is async, so we need to wait until all less is compiled

lib/huddle.js

@@ -1,10 +1,10 @@
 var htmlparser = require('htmlparser'),
     fs = require('fs'),
+    path = require('path'),
     extend = require('xtend'),
     uglifyjs = require('uglify-js'),
     cleancss = require('clean-css'),
     less = require('less');
-
 /**
  * A library to retrieve CSS and Javascript references from an HTML file and
  * pack and compress those files.
@@ -292,21 +292,39 @@ function Huddle(options) {
             data;
         for (i in self._stylesheets) {
             data = '';
+            toWait=0;
             for (j in self._stylesheets[i]) {
                 if (self._stylesheets[i][j] === 'text/less') {
-                    less.render(fs.readFileSync(j, 'utf8'), function (e, css) {
+                    oldCwd = process.cwd()
+                    f = path.resolve(j);
+                    process.chdir(path.dirname(f));
+                    toWait++;
+                    less.render(fs.readFileSync(f, 'utf8'), function (e, css) {
                         data += css;
+                        toWait--;
                     });
+                    process.chdir(oldCwd);
                 } else {
                     data += fs.readFileSync(j, 'utf8');
                 }
             }
-            fs.writeFileSync(i + '.css',
-                             cleancss.process(data, {
-                                 keepSpecialComments: 0,
-                                 removeEmpty: true
-                             }),
-                             'utf8');
+
+            function checkRender()
+            {
+                    if (toWait==0)
+                    {
+                        fs.writeFileSync(i + '.css',
+                            cleancss.process(data, {
+                                keepSpecialComments: 0,
+                                removeEmpty: true
+                                }),'utf8');
+                    } else { 
+                        setTimeout(checkRender, 100)
+                    }
+            }
+            checkRender();
+
+
         }
     }
 }